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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Implies the amount of estrogen production
Follical Stimulating in males
scrotal circumference (BSE)
butterfat
femininity of a heifer
2. (LH) causes female's egg to break (her period)
stag
purpose of Breeding Soundness Exam (BSE) for males
Lutinizing Hormone in females
seminiferous tubules
3. Failure to have one testis (gonad) to descend
what has to happen for males for copulation to occur
ewe's estrous cycle
stag
monorchid
4. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
humans: stress level vs sperm
retractor muscles
things to check for in a breeding soundness exam (BSE)
organs used in spermatogenesis
5. What helps regulate spermatogenesis?
#1 cost in production
Avg. bull specs
testosterone
testis (gonads)
6. (LH) causes female's egg to break (her period)
Size of cow in relation to the amount of milk produced
sow gestation
Lutinizing Hormone in females
Grading choice
7. Check feet and legs - look for masculine traits in build such as crest and muscling
Hormones from both the fetus and the mom.
vagina
visual evaluation (BSE)
mare gestation
8. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
Follical Stimulating in males
retractor muscles
spermatogenesis
Dairy calves are removed from cow at birth to...
9. 147 days
cow ovulation
Lutinizing Hormone in females
spermatogenesis
ewe gestation
10. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
Where livelihood is in agriculture
femininity of a heifer
Mares
Dairy calves are removed from cow at birth to...
11. Sperm production
spermatogenesis
testosterone
scrotum
penis sizes vs delivering methods
12. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
4 major reasons for culling dairy cows
retractor muscles
ewe's estrous cycle
sow estrus cycle
13. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
dry-off time in dairy cattle
cervix
cow estrus cycle
uterus
14. Look for infection - split - and rupture of the penis
Where livelihood is in agriculture
6-8 weeks
Dairy Cattle Lactation (standard)
penis and prepuce observation (BSE)
15. Animals which have only one estrous cycle (ex: dog - fox)
things to check for in a breeding soundness exam (BSE)
~1 month
cow ovulation
monestrous
16. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
epididymis: definition - 3 parts - 4 functions
estrous
sow gestation
~1 month
17. Superior genes are _______ to multiply
testis (gonads)
Hard
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
Size of cow in relation to the amount of milk produced
18. When are dairy cattle dehorned?
6-8 weeks
semen evaluation (BSE)
~1 month
functions of progestrone
19. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
sow estrus cycle
growth lost from castration methods (knife & band)
mastitis
Size of cow in relation to the amount of milk produced
20. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
rectal palpation (BSE)
sow ovulation
oviducts
Jersey Cow
21. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
pelvis
sertoli cells
Brown Swiss Cow
things to check for in a breeding soundness exam (BSE)
22. 10-37 (21) days
mare ovulation
epididymis: definition - 3 parts - 4 functions
mare estrus cycle
Mares
23. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
castration
Reasons for gestation length being affected
leydid or interstitial cells
Brown Swiss Cow
24. When are dairy cattle dehorned?
mare ovulation
eminal vesicles
~1 month
epididymis: definition - 3 parts - 4 functions
25. 30-38 hours after estrus cycle begins
Avg. bull specs
reason for seasonal breeding periods
sow ovulation
oviducts
26. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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27. Why Dairy calves are fed powdered milk.
hormones
1. more cost effective - 2. powdered milk is in excess production
testosterone
cow estrus
28. 45-60 days after breeding; re-breed as required
urethra
dartos muscle
mastitis
dairy cattle pregnancy check
29. 336 days
accessory sex glands
cow ovulation
mare gestation
sow estrus
30. Not under a timeline - cow can not be sold as steak
scrotal circumference (BSE)
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
penis proper
Grading choice
31. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.
butterfat
why does the cow need fat deposits during pregnancy?
cow gestation
prostaglandin
32. Parturition is controlled by...
Hormones from both the fetus and the mom.
spermatogenesis
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
polyestrous
33. Days which have increasing daylight hours
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34. The more stressed out the male is - the less sperm he is going to produce
mare ovulation
humans: stress level vs sperm
mare estrus
uterus
35. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
scrotal circumference (BSE)
dairy cattle pregnancy check
Mares
Sperm growth rate
36. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
Dairy Cattle Lactation (standard)
castration
cowper's gland
Follical Stimulating in males
37. 14-19 (17) days
Brown Swiss Cow
ewe estrus cycle
Holstein Cow
estrus
38. 1. brain function - 2. blood flow - 3. willing female
accessory sex glands
what has to happen for males for copulation to occur
mare gestation
Dairy Cattle Gestation
39. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.
sertoli cells
Bull's fibro-elastic penis
van deferens
ewe gestation
40. Milk is 15% ________ and 85% __________.
~1 month
cow estrus
dry matter and water
Culls bulls earlier (2 reasons)
41. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
Mares
van deferens
testis (gonads)
cowper's gland
42. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
behavioral signs of estrus
prostate gland
purpose of Breeding Soundness Exam (BSE) for males
cryptorchid
43. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
oviducts
stag
seasonally polyestrous
what has to happen for males for copulation to occur
44. When are steers and heifers weaned from bottle feeding?
6-8 weeks
dartos muscle
#1 cost in production
femininity of a heifer
45. Failure to have one testis (gonad) to descend
epididymis: definition - 3 parts - 4 functions
castration
effects of estrogen
monorchid
46. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
Sperm survival specs
elastrator
sigmoid flexure
#1 cost in production
47. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood
cowper's gland
penis proper
~1 month
6-8 weeks
48. Birthing process (termination of gestation)
butterfat
Parturition
why does the cow need fat deposits during pregnancy?
cowper's gland
49. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
dartos muscle
cryptorchid
effects of estrogen
testosterone
50. Contains and regulates the temp of the testes for sperm production
scrotum
~1 month
prostaglandin
eminal vesicles